A ruby helper for printing out ongoing progess (for shell).

shell_spinner.rb

module Kernel
  # Prints out progress
  @@printp_spinner = %w(⇐ ⇖ ⇑ ⇗ ⇒ ⇘ ⇓ ⇙)
  @@printp_spinnerpos = 0
  @@printp_cols = [`tput cols`.to_i - 20, 50].max
  def printp(symbol, i)
    print @@printp_spinnerpos % @@printp_cols == 0 ? "\n" : ("\b" * (16 + symbol.size))
    print "#{symbol}#{" %3d%" % i} complete #{@@printp_spinner[(@@printp_spinnerpos+=1) % 8]} "
    STDOUT.flush
  end
end

(1..100).to_a.each { |i| printp(".", i); sleep 0.1; }

awesome!

thinking about cleaning it up and maybe doing a C extension for this? Kinda useful for migrations so far :)

leave it in ruby!